A numerical study of the high-n shear Alfvén spectrum gap and the high-n gap mode

Ming-Sheng Chu, J. M. Greene, L. L. Lao, A. D. Turnbull, M. S. Chance

Research output: Contribution to journalArticle

148 Citations (Scopus)

Abstract

The toroidicity-induced gaps of the shear Alfvén wave spectrum in tokamaks are shown to satisfy an envelope equation. The structure of these gaps, and the location of the high-n gap modes, which are localized modes with frequency in the gap, are studied for general numerically generated equilibria. The dependence of the frequencies of the gaps and the gap modes on the equilibrium properties, such as elongation, triangularity, and β of the plasma are explored.

Original languageEnglish
Pages (from-to)3713-3721
Number of pages9
JournalPhysics of Fluids B
Volume4
Issue number11
DOIs
Publication statusPublished - 1992 Jan 1

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

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